From 513d188d9bfe882580cdb8f3e9a8ed0c290875ad Mon Sep 17 00:00:00 2001 From: Linjie Fu Date: Thu, 16 Feb 2023 13:46:31 +0800 Subject: [PATCH] lavc/hevcdec: Fix the parsing for use_integer_mv_flag According to 7.3.6.1, use_integer_mv_flag should be parsed if motion_vector_resolution_control_idc equals to 2. If not present, it equals to motion_vector_resolution_control_idc. Signed-off-by: Linjie Fu Signed-off-by: Fei Wang --- libavcodec/hevcdec.c | 8 ++++++++ libavcodec/hevcdec.h | 1 + 2 files changed, 9 insertions(+) diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c index f9a97ac7f5..52fa627133 100644 --- a/libavcodec/hevcdec.c +++ b/libavcodec/hevcdec.c @@ -839,6 +839,14 @@ static int hls_slice_header(HEVCContext *s) sh->max_num_merge_cand); return AVERROR_INVALIDDATA; } + + // Syntax in 7.3.6.1 + if (s->ps.sps->motion_vector_resolution_control_idc == 2) + sh->use_integer_mv_flag = get_bits1(gb); + else + // Inferred to be equal to motion_vector_resolution_control_idc if not present + sh->use_integer_mv_flag = s->ps.sps->motion_vector_resolution_control_idc; + } sh->slice_qp_delta = get_se_golomb(gb); diff --git a/libavcodec/hevcdec.h b/libavcodec/hevcdec.h index 7841ba8565..a7fc669bcb 100644 --- a/libavcodec/hevcdec.h +++ b/libavcodec/hevcdec.h @@ -305,6 +305,7 @@ typedef struct SliceHeader { int tc_offset; ///< tc_offset_div2 * 2 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand + uint8_t use_integer_mv_flag; unsigned *entry_point_offset; int * offset;